Make CertVerifier a pure virtual interface.

chrome/browser/net/connection_tester_unittest.cc

Index: chrome/browser/net/connection_tester_unittest.cc
===================================================================
--- chrome/browser/net/connection_tester_unittest.cc	(revision 128056)
+++ chrome/browser/net/connection_tester_unittest.cc	(working copy)
@@ -108,7 +108,7 @@
   net::TestServer test_server_;
   ConnectionTesterDelegate test_delegate_;
   net::MockHostResolver host_resolver_;
-  net::CertVerifier cert_verifier_;
+  scoped_ptr<net::CertVerifier> cert_verifier_;
   scoped_ptr<net::ProxyService> proxy_service_;
   scoped_refptr<net::SSLConfigService> ssl_config_service_;
   scoped_ptr<net::HttpTransactionFactory> http_transaction_factory_;
@@ -119,7 +119,8 @@
  private:
   void InitializeRequestContext() {
     proxy_script_fetcher_context_->set_host_resolver(&host_resolver_);
-    proxy_script_fetcher_context_->set_cert_verifier(&cert_verifier_);
+    cert_verifier_.reset(net::CertVerifier::CreateDefault());
+    proxy_script_fetcher_context_->set_cert_verifier(cert_verifier_.get());
     proxy_script_fetcher_context_->set_http_auth_handler_factory(
         &http_auth_handler_factory_);
     proxy_service_.reset(net::ProxyService::CreateDirect());
@@ -127,7 +128,7 @@
     ssl_config_service_ = new net::SSLConfigServiceDefaults;
     net::HttpNetworkSession::Params session_params;
     session_params.host_resolver = &host_resolver_;
-    session_params.cert_verifier = &cert_verifier_;
+    session_params.cert_verifier = cert_verifier_.get();
     session_params.http_auth_handler_factory = &http_auth_handler_factory_;
     session_params.ssl_config_service = ssl_config_service_;
     session_params.proxy_service = proxy_service_.get();